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WorksheetsQualitative Analysis CIE Science (C8.4)
Total questions: 21
Worksheet time: 12mins
What is the test and positive result for carbonate ions (CO₃²-)?
Acidify with dilute nitric acid, then add aqueous silver nitrate and a white precipitate is produced
Add dilute acid and effervescence is seen as carbon dioxide is produced
Acidify with dilute nitric acid then add aqueous silver nitrate and a yellow precipitate is produced
Acidify, then add aqueous barium nitrate or barium chloride and a white precipitate is produced
What is the test and positive result for chloride ions (Cl-)?
Acidify with dilute nitric acid, then add aqueous silver nitrate and a white precipitate is produced
Acidify with dilute nitric acid then add aqueous silver nitrate and a yellow precipitate is produced
Acidify, then add aqueous barium nitrate or barium chloride and a white precipitate is produced
Add a small volume of acidified aqueous potassium manganite (VIII) and there will be a colour change from purple to colourless
What is the test and positive result for sulfite ions (SO₃²-)?
Acidify with dilute nitric acid, then add aqueous silver nitrate and a white precipitate is produced
Add aqueous sodium hydroxide, then aluminium foil, warm carefully and ammonia gas is produced
Acidify with dilute nitric acid then add aqueous silver nitrate and a yellow precipitate is produced
Add a small volume of acidified aqueous potassium manganite (VIII) and there will be a colour change from purple to colourless
What is the test and positive result for bromide ions (Br-)?
Acidify with dilute nitric acid, then add aqueous silver nitrate and a cream precipitate is produced
Add aqueous sodium hydroxide, then aluminium foil, warm carefully and ammonia gas is produced
Acidify with dilute nitric acid then add aqueous silver nitrate and a yellow precipitate is produced
Acidify with dilute nitric acid then add aqueous silver nitrate and a white precipitate is produced
What is the test and positive result for Iodide ions (I-)?
Acidify with dilute nitric acid, then add aqueous silver nitrate and a white precipitate is produced
Add dilute acid and effervescence is seen as carbon dioxide is produced
Acidify with dilute nitric acid then add aqueous silver nitrate and a yellow precipitate is produced
Acidify, then add aqueous barium nitrate or barium chloride and a white precipitate is produced
What is the test and positive result for sulfate ions (SO₄²-)?
Acidifiy, then add aqueous barium nitrate or barium chloride and a white precipitate is produced
Add aqueous sodium hydroxide, then aluminium foil, warm carefully and ammonia gas is produced
Acidify with dilute nitric acid then add aqueous silver nitrate and a white precipitate is produced
Add a small volume of acidified aqueous potassium manganite (VIII) and there will be a colour change from purple to colourless
What is the test and positive result for nitrate ions (NO₃-)?
Add dilute acid and effervescence is seen as carbon dioxide is produced
Add aqueous sodium hydroxide, then aluminium foil, warm carefully and ammonia gas is produced
Acidify with dilute nitric acid then add aqueous silver nitrate and a white precipitate is produced
Add a small volume of acidified aqueous potassium manganite (VIII) and there will be a colour change from purple to colourless
What is the test and positive result for ammonium ions (NH₄+)?
Effect of aqueous sodium hydroxide = Ammonia produced on warming
Effect of aqueous ammonia = no effect
Effect of aqueous sodium hydroxide = Ammonia produced on warming
Effect of aqueous ammonia = white precipitate
Effect of aqueous sodium hydroxide = No effect
Effect of aqueous ammonia = white precipitate
Effect of aqueous sodium hydroxide = white precipitate
Effect of aqueous ammonia = no effect
What is the test and positive result for calcium ions (Ca²+)?
Effect of aqueous sodium hydroxide = no effect
Effect of aqueous ammonia = (very slight) white precipitate
Effect of aqueous sodium hydroxide = white precipitate, soluble in excess
Effect of aqueous ammonia = no effect
Effect of aqueous sodium hydroxide = white precipitate, insoluble in excess
Effect of aqueous ammonia = (very slight) white precipitate
Effect of aqueous sodium hydroxide = (very slight) white precipitate
Effect of aqueous ammonia = white precipitate, insoluble in excess
What is the test and positive result for Copper (II) ions (Cu²+)?
Effect of aqueous sodium hydroxide = white precipitate
Effect of aqueous ammonia = light blue precipitate, insoluble in excess
Effect of aqueous sodium hydroxide = light blue precipitate, insoluble in excess
Effect of aqueous ammonia = light blue precipitate, soluble in excess
Effect of aqueous sodium hydroxide = light blue precipitate, soluble in excess
Effect of aqueous ammonia = light blue precipitate, soluble in excess
Effect of aqueous sodium hydroxide = white precipitate, insoluble in excess
Effect of aqueous ammonia = white precipitate, soluble in excess
What is the test and positive result for Iron (II) ions (Fe²+)?
Effect of aqueous sodium hydroxide = green precipitate, insoluble in excess
Effect of aqueous ammonia = green precipitate, soluble in excess
Effect of aqueous sodium hydroxide = green precipitate, soluble in excess
Effect of aqueous ammonia = red brown precipitate, insoluble in excess
Effect of aqueous sodium hydroxide = red-brown precipitate, insoluble in excess
Effect of aqueous ammonia = blue precipitate, insoluble in excess
Effect of aqueous sodium hydroxide = green precipitate, insoluble in excess
Effect of aqueous ammonia = green precipitate, insoluble in excess
What is the test and positive result for Iron (III) ions (Fe³+)?
Effect of aqueous sodium hydroxide = green precipitate, insoluble in excess
Effect of aqueous ammonia = red brown precipitate, soluble in excess
Effect of aqueous sodium hydroxide = red-brown precipitate, soluble in excess
Effect of aqueous ammonia = red brown precipitate, soluble in excess
Effect of aqueous sodium hydroxide = red-brown precipitate, insoluble in excess
Effect of aqueous ammonia = red brown precipitate, insoluble in excess
Effect of aqueous sodium hydroxide = red-green precipitate, insoluble in excess
Effect of aqueous ammonia = green precipitate, insoluble in excess
What is the test and positive result for zinc ions (Zn²+)?
Effect of aqueous sodium hydroxide = ammonia produced on warming
Effect of aqueous ammonia = white precipitate, insoluble in excess, giving a colourless solution
Effect of aqueous sodium hydroxide = white precipitate, soluble in excess, giving a colourless solution
Effect of aqueous ammonia = white precipitate, soluble in excess, giving a colourless solution
Effect of aqueous sodium hydroxide = ammonia produced on warming
Effect of aqueous ammonia = blue precipitate
Effect of aqueous sodium hydroxide = ammonia produced on warming
Effect of aqueous ammonia = ammonia produced on warming
What is the gas test and positive result for ammonia (NH₃)?
Turns limewater milky
Turns damp red litmus paper blue
Bleaches damp litmus paper
Pops with a lighted splint
What is the gas test and positive result for Hydrogen (H₂)?
Pops with a lighted splint
Turns limewater milky
Bleaches damp litmus paper
Relights a glowing splint
What is the gas test and positive result for chlorine (Cl₂)?
Turns damp red litmus paper blue
Turns limewater milky
Bleaches damp litmus paper
Relights a glowing splint
What is the gas test and positive result for Oxygen (O₂)?
Turns damp red litmus paper blue
Turns limewater milky
Pops with a lighted splint
Relights a glowing splint
What is the gas test and positive result for Carbon Dioxide (CO₂)?
Turns damp red litmus paper blue
Turns limewater milky
Pops with a lighted splint
Turns limewater pink
What is the flame colour test for Lithium ions (Li+)
(a)
What is the flame colour test for Potassium ions (K+)
(a)
What is the flame colour test for Copper ions (Cu²+)
(a)
